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Study shows biodiesel blends in buses reduce PM, other harmful exhaust elements, EC and CO

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Before they can be used, however, it is essential to understand their physical properties, combustion chemistry, and characterization of the exhaust due to a number of issues associated with fuel properties—for example, a lower heating value and higher cloud point than regular diesel. Kumar et al.

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Researchers devise method to suppress thermal conductivity to improve thermoelectric materials for waste heat recovery

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A new study published in the journal Nature Materials has found a way to suppress the thermal conductivity in sodium cobaltate so that it can be used to harvest waste energy, with potential applications such as automotive waste heat recovery. CoO 2 , which has a large-period superstructure. —Voneshen et al. Gutmann, M.

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ARPA-E awarding $39M to 16 projects to grow the domestic critical minerals supply chain

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Olivine is a CO 2 -reactive waste product that can be returned as tailings after capture carbon from the air. Travertine will launch a transformative process that integrates strong acid treatment of mining waste or tailings with electrolytic acid recycling. Pacific Northwest National Laboratory. University of Nevada, Reno.

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New power-dense 2.0L GDI turbo with twin-scroll turbocharger and new combustion system offered in 2013 Chevrolet Malibu

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Rotocast aluminum cylinder head with sodium-filled exhaust valves. Rotocast aluminum cylinder head with sodium-filled exhaust valves. The exhaust valves have sodium-filled stems that promote valve cooling. At normal engine operating temperatures, the sodium inside the valve stem becomes liquid.

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Advances in the conversion efficiency of thermoelectric materials

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for the materials and possibly good enough for consideration for waste heat recovery in automotive exhaust systems. The high thermoelectric figure of merit is expected to enable the conversion of 14% of heat waste to electricity. at 700 °C (973 K), in half-Heusler alloys—about 60% higher than the best reported ZT of 0.5

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Jeep introduces 2018 Wrangler with mild hybrid, diesel options; plug-in hybrid version in 2020

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liter I-4 engine features a twin-scroll, low-inertia turbocharger with an electronically actuated waste gate for exceptional responsiveness and performance, even while traversing over difficult terrain. A water-cooled, integrated exhaust manifold helps reduce turbo inlet temperatures while providing increased engine reliability.

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Cadillac launches new V-6 family; 3.0L Twin Turbo w/ cylinder deactivation and stop/start for CT6

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This new, parallel-flow design maximizes heat extraction in the area of the upper deck, intake and exhaust valve bridges in the heads and integrated exhaust manifold with a minimal amount of coolant. An integrated exhaust manifold rounds out the head’s features, saving weight over a conventional, separate head/manifold assembly.

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